1299229261387 has 2 divisors, whose sum is σ = 1299229261388. Its totient is φ = 1299229261386.

The previous prime is 1299229261333. The next prime is 1299229261391. The reversal of 1299229261387 is 7831629229921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1299229261387 is a prime.

It is a super-3 number, since 3×1299229261387³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1299229261487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649614630693 + 649614630694.

It is an arithmetic number, because the mean of its divisors is an integer number (649614630694).

Almost surely, 2^{1299229261387} is an apocalyptic number.

1299229261387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299229261387 is an equidigital number, since it uses as much as digits as its factorization.

1299229261387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 61.

The spelling of 1299229261387 in words is "one trillion, two hundred ninety-nine billion, two hundred twenty-nine million, two hundred sixty-one thousand, three hundred eighty-seven".